2013 HG20

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5757513553 ± 4.80e-07
Semi-major axis (a)2.1682458034 AU ± 2.13e-06
Inclination (i)4.17482697° ± 8.39e-06
Long. of Asc. Node (Ω)203.69070318° ± 4.46e-05
Arg. of Perihelion (ω)89.09706589° ± 4.25e-05
Mean Anomaly (M)308.30412515° ± 2.10e-03
Mean Motion (n)0.3087091517°/day ± 4.54e-07
Perihelion dist (q)0.91987534 AU ± 1.38e-06
Aphelion dist (Q)3.41661626 AU ± 3.51e-06
Orbital Period3.19273425 yr ± 4.70e-06
Physical Parameters
H (abs. magnitude)21.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.336″
Uncertainty1
Orbit TypeApollo
MOID0.053542 AU
Observations Used198
Radar Obs Used1
Oppositions1
Arc Total2013-2013
First Observation Used2013-04-30
Last Observation Used2013-10-30
Observations (208)
Date Type RA Dec Mag Band Observatory
2013-08-27 08:42:59 C 01 49 33.91 +60 40 26.0 u H21
2013-08-30 01:01:49 C 01 29 14.16 +51 07 13.0 o 033
2013-08-30 01:06:27 C 01 29 13.02 +51 06 35.8 o 033
2013-08-30 01:41:42 C 01 29 03.94 +51 01 50.9 o 033
2013-08-30 01:46:18 C 01 29 02.80 +51 01 14.5 o 033
2013-08-30 10:09:55 C 01 27 10.33 +49 54 34.2 q H45
2013-08-30 10:11:02 C 01 27 10.07 +49 54 24.5 q H45
2013-08-30 10:11:58 C 01 27 09.84 +49 54 17.3 q H45
2013-08-30 10:12:44 C 01 27 09.69 +49 54 11.6 q H45
2013-08-30 10:13:34 C 01 27 09.43 +49 54 04.8 q H45
2013-08-30 10:14:26 C 01 27 09.25 +49 53 57.6 q H45
2013-08-30 10:15:17 C 01 27 09.03 +49 53 50.9 q H45
2013-08-30 10:16:08 C 01 27 08.84 +49 53 44.3 q H45
2013-08-31 01:03:20 C 01 24 19.96 +47 59 30.2 w I76
2013-08-31 01:11:34 C 01 24 18.24 +47 58 31.1 w I76
2013-08-31 01:16:40 C 01 24 17.08 +47 57 51.1 w I76
2013-08-31 01:21:47 C 01 24 16.04 +47 57 14.3 w I76
2013-08-31 01:26:53 C 01 24 14.84 +47 56 35.2 w I76
2013-08-31 01:37:08 C 01 24 12.68 +47 55 20.7 w I76
2013-08-31 01:42:16 C 01 24 11.53 +47 54 41.9 w I76
2013-08-31 01:49:48 C 01 24 08.21 +47 53 39.3 q 204
2013-08-31 01:54:12 C 01 24 07.26 +47 53 06.2 q 204
2013-08-31 01:58:35 C 01 24 06.31 +47 52 33.3 q 204
2013-08-31 02:03:00 C 01 24 05.36 +47 52 00.4 q 204
2013-08-31 02:07:23 C 01 24 04.42 +47 51 27.3 q 204
2013-08-31 23:12:11 C 01 20 33.29 +45 18 17.0 w I76
2013-08-31 23:17:09 C 01 20 32.36 +45 17 41.5 w I76
2013-08-31 23:22:12 C 01 20 31.50 +45 17 07.0 w I76
2013-08-31 23:27:17 C 01 20 30.61 +45 16 32.4 w I76
2013-08-31 23:32:23 C 01 20 29.69 +45 15 57.4 w I76
2013-09-04 00:47:15 C 01 11 02.67 +37 39 39.3 c A24
2013-09-04 00:48:17 C 01 11 02.56 +37 39 34.4 c A24
2013-09-04 01:07:52 C 01 10 59.97 +37 37 49.8 q 160
2013-09-04 01:09:53 C 01 10 59.73 +37 37 38.8 q 160
2013-09-04 01:11:53 C 01 10 59.46 +37 37 27.8 q 160
2013-09-04 01:47:54 C 01 10 55.10 +37 34 07.4 c A24
2013-09-04 01:48:57 C 01 10 54.95 +37 34 01.5 c A24
2013-09-05 01:07:21 C 01 08 37.72 +35 30 29.2 c A24
2013-09-05 01:08:24 C 01 08 37.58 +35 30 23.8 c A24
2013-09-05 02:08:00 C 01 08 30.87 +35 25 20.4 c A24
2013-09-05 02:09:02 C 01 08 30.77 +35 25 15.8 c A24
2013-09-05 08:15:45 C 01 07 57.76 +34 54 41.8 q H45
2013-09-05 08:17:13 C 01 07 57.58 +34 54 34.4 q H45
2013-09-05 08:17:53 C 01 07 57.51 +34 54 30.9 q H45
2013-09-05 08:18:53 C 01 07 57.42 +34 54 25.7 q H45
2013-09-05 08:19:56 C 01 07 57.28 +34 54 20.5 q H45
2013-09-05 08:21:10 C 01 07 57.14 +34 54 14.6 q H45
2013-09-05 09:32:28 C 01 07 48.78 +34 48 10.7 u H21
2013-09-05 09:35:13 C 01 07 48.47 +34 47 56.9 u H21
2013-09-05 09:38:28 C 01 07 48.11 +34 47 40.5 u H21
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-09-11 05:08:00 -149663.3197 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)